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Percentage
Find a percentage of a number. Enter the number and percent to see the result, formula and calculation steps.
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Multiplication and division are calculated before addition and subtraction. Percent divides the current number by 100.MORE KEYPAD CALCULATORS
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Finance
Compound interest
Calculate compound growth from an initial amount, annual interest rate and time. See the formula and a worked example.
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Triangle area
Explore the area of a triangle, step by step.
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Metres to feet converter
Convert metres to feet using the exact conversion factor of 0.3048 metres per foot. See the formula and worked steps.
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Age calculator
Calculate age between a date of birth and a chosen date. See the calendar-based result, calculation steps and date assumptions.
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Loan payment & amortization
Calculate a fixed monthly loan payment from principal, annual interest and payment count. View the amortization schedule and calculation steps.
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Scientific calculator
Evaluate expressions with trigonometry, roots, powers, logs and factorials. Use degree or radian mode and follow the worked steps.
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Circle area
Find the area enclosed by a circle.
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